Sensor.py

class SensorRegistry:
    def __init__(self):
        self._pokeInterval=1
        self._sensors=[]
        self._timerWakeUpCall=None
        # self.eventTimer.start()
        # self.thread=threading.Thread(target=self.timer)
        # self.thread.start()
        # self.process=Process(target=self.timer)
        # self.process.start()

    # def timer(self):
    #     while True:
    #         time.sleep(self._pokeInterval)
    #         self._trigger()
    #
    # def registerSensor(self,sensorClass):
    #     newSensor=sensorClass()
    #     self._sensors.append(newSensor)

    def _trigger(self):
        # dictToBeSent=self.mail()
        strToBeSent="a"
        # for key in dictToBeSent:
        #     strToBeSent+=(str(key)+" "+str(dictToBeSent[key])+";")
        if self._timerWakeUpCall != None :
           self._timerWakeUpCall("Sensors",strToBeSent)
        # self.eventTimer.run()

    def registerCallBack(self,callback):
        self._timerWakeUpCall=callback

    # def mail(self):
    #     receivedDictionaries={}
    #     for sensor in self._sensors:
    #         receivedDictionary=sensor.update()
    #         receivedDictionaries.update(receivedDictionary)
    # return receivedDictionaries